Physics Topic Practice
Density Calculations | GCSE Physics Practice
Density describes how much mass is in a given volume. Learn to use the ρ = m/V formula.
Why does a giant ship float while a small pebble sinks?
What is Density Calculations | Practice?
"The amount of mass per unit volume of a substance."
Question 1
What is the formula for density?
Question 2
If you cut a block of uniform wood in half, what happens to its density?
Question 3
An object has a mass of 500g and a volume of 250cm³. What is its density in kg/m³?
Density Key Points
Density = mass / volume.
Unit: kg/m³ or g/cm³.
Objects float if they are less dense than the fluid they are in.
Exam Tip
Exam Tip: Usually, you need to convert mass to kg and volume to m³ for standard SI units.
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